Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN MORTGAGE SERVICING RIGHTS AND MORTGAGE SERVICING RIGHTS FINANCING RECEIVABLE - Narrative (Details)

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INVESTMENTS IN MORTGAGE SERVICING RIGHTS AND MORTGAGE SERVICING RIGHTS FINANCING RECEIVABLE - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Feb. 17, 2017
Jan. 31, 2017
Jan. 27, 2017
Dec. 28, 2016
Jun. 30, 2017
Jun. 30, 2017
Ditech Financial LLC [Member]            
Schedule of MSRs [Line Items]            
Subservicer percent of UPB           37.20%
Ditech Financial LLC [Member] | New Residential Mortgage LLC [Member]            
Schedule of MSRs [Line Items]            
Payments to acquire MSRs           $ 40.4
Ditech Financial LLC [Member] | New Residential Mortgage LLC [Member] | Mortgage Servicing Rights [Member]            
Schedule of MSRs [Line Items]            
UPB of Underlying Mortgages         $ 5,000.0 $ 5,000.0
Nationstar [Member]            
Schedule of MSRs [Line Items]            
Subservicer percent of UPB           21.40%
Nationstar [Member] | New Residential Mortgage LLC [Member] | Mortgage Servicing Rights [Member]            
Schedule of MSRs [Line Items]            
UPB of Underlying Mortgages         24,100.0 $ 24,100.0
CitiMortgage, Inc. [Member]            
Schedule of MSRs [Line Items]            
Subservicer percent of UPB           33.20%
CitiMortgage, Inc. [Member] | New Residential Mortgage LLC [Member]            
Schedule of MSRs [Line Items]            
Payments to acquire MSRs     $ 906.0      
Purchase price holdback     45.3      
CitiMortgage, Inc. [Member] | New Residential Mortgage LLC [Member] | Mortgage Servicing Rights [Member]            
Schedule of MSRs [Line Items]            
UPB of Underlying Mortgages     $ 92,500.0      
Flagstar [Member]            
Schedule of MSRs [Line Items]            
Subservicer percent of UPB           1.50%
PHH Mortgage Corporation [Member]            
Schedule of MSRs [Line Items]            
Subservicer percent of UPB           6.70%
PHH Mortgage Corporation [Member] | New Residential Mortgage LLC [Member] | Mortgage Servicing Rights [Member]            
Schedule of MSRs [Line Items]            
UPB of Underlying Mortgages       $ 61,100.0 $ 13,200.0 $ 13,200.0
PHH Mortgage Corporation [Member] | New Residential Mortgage LLC [Member] | Seasoned Agency Loans [Member]            
Schedule of MSRs [Line Items]            
Payments to acquire MSRs       509.9    
PHH Mortgage Corporation [Member] | New Residential Mortgage LLC [Member] | Private-label Residential Mortgage Loans [Member]            
Schedule of MSRs [Line Items]            
Payments to acquire MSR, servicer advances       $ 221.9    
United Shore Financial Services, LLC [Member] | New Residential Mortgage LLC [Member]            
Schedule of MSRs [Line Items]            
Payments to acquire MSRs   $ 94.8        
Purchase price holdback   9.5        
United Shore Financial Services, LLC [Member] | New Residential Mortgage LLC [Member] | Mortgage Servicing Rights [Member]            
Schedule of MSRs [Line Items]            
UPB of Underlying Mortgages   $ 9,800.0        
Residential Credit Solutions, Inc. [Member] | New Residential Mortgage LLC [Member]            
Schedule of MSRs [Line Items]            
Payments to acquire MSRs $ 48.6          
Payments to acquire MSR, servicer advances 1.3          
Purchase price holdback 4.9          
Residential Credit Solutions, Inc. [Member] | New Residential Mortgage LLC [Member] | Mortgage Servicing Rights [Member]            
Schedule of MSRs [Line Items]            
UPB of Underlying Mortgages $ 5,200.0          
Mortgage Servicing Rights Financing Receivable [Member] | PHH Mortgage Corporation [Member]            
Schedule of MSRs [Line Items]            
Discount rate         11.00%